Heater



June 17 1930. A. J. LIND-VEMANN HEATER Filed Feb. 27, 1928 2 Sheets:$heet l QTY ahoewco'c June 17, 1930.

A. .1. LINDEMANN I HEATER Filed Feb. 27', 1928 2 Sheets-Sheet 2 Patented June 17, 1930 ALBEn'ii J. LINDEMA EQE MILWAu E, WISCONSIN, ssmnon 120A; J. LIED MAN &

nov nsoNcoMP N oE MILWAUKEE, WISCONSIN, A CORPORATION or WISCONSIN PATENT. oF-F1c-Ei HEATER Application filed February 27, 1928 f'sermi-n may The present improvements (relate in gen-.

eral to heaters and more particularly to that type of heater wherein solid fuel is 811b ployed as the heating agent.

It has been customary to install coal and wood burning heaters in the basement of homes or other-habitable quarters and to conduct the heated air by flues to various parts of the building. While such an installation confines objectionable dust, dirt, etc. tothat portion of the building not actuallyhabitated, it'has been found inconvenient to attend to, as well as wastefulof fuel and heat; Heaters of varied construction have been designed for installation actually in the rooms to be heated, commonly known asparlor heaters, but have been found to be uneconomical in the use of fuel, wasteful in the application of the heat and un healthful and unsanitary due to the escape of dirt and smoke into the surroundlng quarters;

e The present improvements have as theirprimary object, among others, the prov-lslon of a parlor heater which is economical in the use of fuel and heat, reduces to a mimmum the dirtaccompanyingthe heaters attejndance,eliminates the possibility of'sinoke entering the room and at'the same time provides an'article of furn ture readily adaptablefor placement in any environment.

Another object is to provide an improved heater of" sturdy construction, easy to assemble and move, in combination with means forphuinidifying the'circulating air.

Other objects and advantages of the va rious details and arrangement of parts will be, obvious'to those skilled in the art upon reference to the accompanyingdrawings in which I Fig. 1 isa'perspective of the improved heater, with parts broken away to show details of construction;

Figs. 2 and 3 are details;

' Fig. 4 is a side view of the heater in perspective, with top and side removed;

Fig. 5 is a rearview in perspective, wit 1 certain partsremoved.

The improved parlor heater illustrated comprises an outer casing 1, having a fornally from one end therethrough, all conveniently supported by legs 3 attached to base, 2. Said base is pref erably of cast iron to afford a sturdy sup port for the superimposed elements- As aforementioned the base is of foraminated or grid-like construction, for permitting the passageeof airtherethrough. i a r The Y walls of the heater are preferably formed of sheet steel and are bentr-along their shortest dimensions to form securing flanges 10, whereby said sheets are bolted at their base to base 2.-. Similar flanges at the top of said sheets are connectedin any desired manner for rigidly holding the same in position, andform asupport for the-remov able top or cover, 8 f Each side sheet or wall 4, 5, 6, and 7 isbent at theedgesof itsgreatest dimension to form outwardly extending" flanges l1; and 12,said flanges beingso con structed that upon: assembly of the casing, as illustrated in Fig; 1, the flange .11 of one sheet and flange 12 'of the adjacent sheet abut along the line where bent and diverge, thereby forming' apair of divergent .vertically extendingflanges providing a dove-tailed corner for the casing at each s A 1 tubular member at each such corner of the casingfor pre 'senting' a finished appearance and holding the side walls in place; This member 13,. see Fig. 2, embraces the aforementioned. contiguousfianges 11 and -12 and is applied thereto by sliding sai1d-n1ember longitudi-- of-said flanges to the other. r

All of the aforementioned partshave a porcelain enamel-finish and are suitably grained to simulate wood, thereby presenting' a furniture finish to'the casing. ,The

cover Sisrelatively light in weight, being I made of porcelain, to facilitate removal andis likewiseiinished to correspond with the' casing. i

The walls of the casing are further pro vided' with'louvers 14: as illustrated, and on the inner side of sheets 5 and 7, aefalse or' inner linin'g'15 is mounted in spaced rel.a

' consumer.

tion, extending from immediately above the louvers 14:, to the top of the casing, thereby forming a vertical air duct 16 (see Fig. 5) on two opposite sides of the casing. The front wall 4: has the usual fuel feed opening 17 -with the door 18 for closing the same, as

well as ash-pit door 19, having suitable damper 20.

The heating unit within casing 1 coinprises the ash-p1t 21, grate (not shown),

fire boX 22 and combustion chamber-23, all being of rugged cast non for resisting great heat, the fire box and combustion chamber being provided with corrugations,afiordingstrength and durability, as well as materially increasing the heating surface. The ash pit 21 is securely mounted on base 2 of the casing, with lire-pot 22 bolted thereto, chamber 23in turn being bolted to the top of pot 22. of these-parts is such, that the heating unit is suitably 'spaced'from the, casing walls.

A partcular feature of the assembly just described resides in the'provision of a smoke Around thetop of the fire pot 22 is an. annular air duct defined by a plu-' rality of segmental bars 24 in theform of a ring. These bars (see Fig. 3) are curved, as

- illustrated and have slots 25 in their lower operable by rod"28land"handle 29', exterior-1y of the front wall 4 and beneath fire door 18. Accordingly when damper 27 is open, air is free to "pass from the space intervening the heatingiunit and casing, through ports 26, into the aforementioned annular air duct defined by segmental bars 2%. Whence said air fills said ductiand escapes into the fire pot and combustion chamber through slots 25. V

The combustion chamber .is provided with the usual opening defined by offset casting 30 in register with casing opening 17, thereby affording a fuel inlet to the fire box, for

coal, c'olre'orwoojd. An-arcuate tube or flue 31, of elbow -form,pa'sses'through the chain ber 23, entering same. at one side thereof, passing outthe top 32 thereof, at which point a removable grate 33 is seated across said flue. Anopening 34 (see Fig. 5) for the exitof hot air and-gases, is provided in the upper rear portion of chamber'23,

The arrangement and position heated air and gases to a chimney or other suitable means, is provided at the upper rear portion of chamber 39. Communication between the combustion chamber 23, flue 35 and flue 4&0, is afforded by pipe ll connecting opening 34; with chamber 39.

Referring to Fig. 5, the above described construction is illustrated with casing wall 6 and the rear wall of chamber 39 removed. A transverse wall 42 projects a short distance from the base of chamber 39, forming a continuation of fines 36 and 38 and has pivotally supported thereon a damper 43 adapted to be rocked freely from full to dotted line position and vice versa, by handie 14 projecting through casing wall 5. Clean out ports 45 and 46 are provided for flue 35, at the bottom and top thereof respectively. A humidifier in the form of a galvanized iron drawer 47 is positioned on the base 2 and beneathhorizental flue 37. Said drawer is provided with a finished face 48 and handle 49 (see 1), for withdrawal through the casing 1.

The operation of the improved heater, so far described, is as follows :When starting the fire in the fire pot, damper 20 is opened and the damper handle l i is pulled out, so

that damper 43 is in the dotted line position of Fig. 5. This causes a direct draft to the chimney from combustion chamber 23, via

pipe'tl, chamber 39 and flue iO, these elements thereby affording a direct discharge flue for the hot air and gases from said directed into the .U-shaped flue 35, passing through flues'36, 37 38, ch-amber 39' to discharge flue 40. These elements thereby affording an indirect discharge flue for the products and air from chamber 23.

gases heat the walls o f the return fine 35,

which radiate the heat to the air within casing l, the spent gases continuing out through flue 40. The radiating surface of the fire pot and combustion chamber is thus augmented by this auxiliary radiating surface, which may be more than half the radiating surface of the heating unit itself. Being away from direct contact with the fire, the economizer may be of thinner iron thanthat of the heating unit, thereby facilitating heat. transfer. It is obvious that a great saving of fuel and heat results in the provision of this economizer, since the utilization of the discharged. products of combustion to heat an additional radiating i surface, produces a greater per cent of heat from'a given quantity of fuel than has heretofore been the practice.

: It will. be noted here that the present improvements embody a heater of the air circulating type as well as a heater dispensing heat by radiation, thus presenting adual function heating unit. When fire is present been found to in the fire pot, a constant circulation of air is established through the'casing. The cooler ing through grate 33 and thence through cover 8. A constant flow of cool air into the lower part of the heater and'hot air from the top thereof, is thus maintained. The diversion of some of the circulating air into duct 31, where it is super-heated, has greatly increase the efhciency of the heater. r

The humidifier 4:7 is provided with a quane tity of water and hasan open top, asillustrated.' Accordingly; the circulating air absorbs moisture therefrom and carries it intothe room, thereby mainta ning the desired humidity. It may be noted here that in addition to the admission of air, the louvers 14;, by their design, also deflect the.

heat radiated from the heating unit downward toward the floor. Should less heat be desired, the gases and hot air from the com- I bustion chamber may be passed directly to the chimney, without diversion through return flues 35, by moving damper 13 to the dotted line position (Fig. 5), thus cutting outfthe auxiliary radiating surface of said flues.

The smoke consumer functions as follows :By turning handle 29 to open position an auxiliary draft is established through ports 26, through the annular air ductof the heating unit.

formed by bars 24 andslots 25 to the interior This air becomes heated as it passes around said duct and discharges radiallyfrom'all sidesthroughslots 25 which throw it downward directly over the fire. Gasesand smoke are, consumed by the presence of this added air directly over the area of combustion. Greater heating energy isthus derived from the fuel. ,This

feature hasbeen found particularly effective where soft coal; is employed and (obviates objectionable smoke attending such use; An added feature,,for preventing the escape of smoke into the room is illustrated in Fig.

1. At the top ofopening'17', a-pl'ate 50 is pfivot-allymounted and depends a short dis, tance across said opening thereby forming a smoke curtain, preventingescape of smoke and gases from the fire pot, into the room, when door 18 is-opem f y a Referring further to Fig. 1, a plate 52 is pivotally' mounted-at its base, along the bottom of. opening 17. Said plate is overbalancedfor swinging by gravity. away from the'interior oflthe casing. lVhen door 18 is open, plate 52 projects outwardly-through opening 17 as seen in Fig.1 A. friction plate 53 is suitably mounted on Ithe ventilated lining of. door 18, and contacts with the corner 5& ofplate 52Jas=door18 is'moved to closing position. Plate '52.is"

thus forced inwardly and upwardly about its pivotal mounting, untilthe door is completely closed, in which position it is held by the door across opening 17. Obviously,

opening movement of 'doorlS permits plate 52 to fall by gravity to the position in Fig. 1. Whendoor 18 is closed,.plates 50 and 52 are extending" toward one another in opposed relation.

Accordingly the position; 5f plate 52" .controlledby door18, and when in the illustrated position, said plate affordsla coal chute and prevents any. coal or 'dust from fallingv onto, the floor. -The spout of a coal scuttle. 'may be rested 'on' plate 52,. and fuel therebyv fed into the fire'pot, any dust or coal' dropping, through careless handling of the scuttle, onto plate 52, which is ultimately thrown into the fire pot upon closing of the door. If. thescuttle is tipped so far as to contact "withupper. plate 50, the. latter willbe swung inwardly andwill'in no way interfere with'tippingof the scuttle; Upon removal of the latter, plate 50 will return by gravity to the illustrated position.

The fire pot 22 has apair of projecting lugs 55 cast integrallythe'rewith or otherwise secured thereto in spacedrelation; A: pair of such lugs are provided on'opposite.

sides ofsaid pot, and each lug hasrigidly secured thereto, an arm 56 projeeting up-v wardly and outwardly througha slot 57 in the adjacent casing wall. Ahfting handle J or bar 58 joins the ends ofthese arms-on each side of the heater and is removably secured thereto, by ornamental knobs 59.

This organization facilitates assembly and disassembly of the casingabout the heating unit, as is obvious The arms 56', handles 58 and knobs 59 are suitably finished to 1 correspond with the casing finish. These elements afford a convenient and sturdy means for'moving the heater, thelifting en- :ergy being applied directly to the heaviest unit, interiorly of the casing 1. When not serving as a lifting means, handles 58 may be utilized for supporting towels or other articles, as desired.

r In the' provision of a light removable cover 8, it is apparent that same may be'removedand the top 32 of chamber 23, as wellas grate 33, utilized for culinary purposes.

Various modifications, within the scope of the present improvements, will be apparent to those skilledin the art.

I claim: V

1. A heater of the character described comprising an outer casing having a plurality of 'louvers in each face, and an open'top'and base, an inner, lining associated with at least one tace'or" said outer casing and defining a vertical air duct, a combustion chamberhaving an arcuate air duct therethrough housed in said-casing, a discharge flue for said chamber, a U-shaped circulation flue 'within said casing con1 municating with said discharge flue and a damper controlling said ,fiues.

2. A heater of thercharacter ,d-escribed comprising an inner heating unit and a casing surrounding same, a pair of spaced arms-secured to opposite sides of said unit and projecting through slots in said casing and a handle removably joining each pair of arms outside saidcasing.

3. A'heater of the character described comprising an outercasing having'louvers, a'fire pot supported within said casing and terminating above said louvers, a combustion chamber supported on said fire pot and having an outlet fine, a plurality of ports through the upper wall (of said pot, a

damper controlling said ports anda peripheral airduct'removably mounted within said fire pot, communicating with said ports and the interior of said fire pot. 4

4:. A heater of the character described comprising an inner heating unit, a casing surrounding same, a laterally extending gripping handle exterior to said'casing, and means connected with'said handle, extending through said casing and secured to said heating unit at spaced points.

l/Vitness my handthis 23d day of February, 1928, at the city of Milwaukee, in the county of Milwaukee, State of VVisconsin.

ALBERT J. LINDEMANN. 

